Answer:
the belief that European civilization was superior to other cultures
Explanation:
If the US didn't have an advanced transportation system, there would be less of a growth in jobs especially for bigger industries. Getting things from one place to another would also be less productive and much slower than it is now.
The main reason why many Americans thought they might be at a disadvantage in trading with China is because the Chinese had devalued their currency in order to make their products more appealing on the international market.